9981051 has 8 divisors (see below), whose sum is σ = 13347600. Its totient is φ = 6634272.

The previous prime is 9981043. The next prime is 9981053. The reversal of 9981051 is 1501899.

9981051 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9981051 - 2³ = 9981043 is a prime.

9981051 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9981053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (1668450).

Almost surely, 2^9981051 is an apocalyptic number.

9981051 is a deficient number, since it is larger than the sum of its proper divisors (3366549).

9981051 is a wasteful number, since it uses less digits than its factorization.

9981051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 9981051 is about 3159.2801395255. The cubic root of 9981051 is about 215.3073016826.

The spelling of 9981051 in words is "nine million, nine hundred eighty-one thousand, fifty-one".